<!doctype html>
<html lang="cn-zh">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>mGenNer Editor-Singing Rivulet Project</title>
    <style>
      body {
        font-family: arial;
        margin: 0;
        padding: none;
      }

      .emscripten { padding-right: 0; margin-left: auto; margin-right: auto; display: block; }
      div.emscripten { text-align: center; }      
      div.emscripten_border { border: 1px solid black; }
      /* the canvas *must not* have any border or padding, or mouse coords will be wrong */
      canvas.emscripten { border: 0px none; background-color: black; }

      #emscripten_logo {
        display: inline-block;
        margin: 0;
      }

      .spinner {
        height: 30px;
        width: 30px;
        margin: 0;
        margin-top: 20px;
        margin-left: 20px;
        display: inline-block;
        vertical-align: top;

        -webkit-animation: rotation .8s linear infinite;
        -moz-animation: rotation .8s linear infinite;
        -o-animation: rotation .8s linear infinite;
        animation: rotation 0.8s linear infinite;

        border-left: 5px solid rgb(235, 235, 235);
        border-right: 5px solid rgb(235, 235, 235);
        border-bottom: 5px solid rgb(235, 235, 235);
        border-top: 5px solid rgb(120, 120, 120);
        
        border-radius: 100%;
        background-color: rgb(189, 215, 46);
      }

      @-webkit-keyframes rotation {
        from {-webkit-transform: rotate(0deg);}
        to {-webkit-transform: rotate(360deg);}
      }
      @-moz-keyframes rotation {
        from {-moz-transform: rotate(0deg);}
        to {-moz-transform: rotate(360deg);}
      }
      @-o-keyframes rotation {
        from {-o-transform: rotate(0deg);}
        to {-o-transform: rotate(360deg);}
      }
      @keyframes rotation {
        from {transform: rotate(0deg);}
        to {transform: rotate(360deg);}
      }

      #status {
        display: inline-block;
        vertical-align: top;
        margin-top: 30px;
        margin-left: 20px;
        font-weight: bold;
        color: rgb(120, 120, 120);
        display:none;
      }

      #progress {
        height: 20px;
        width: 300px;
      }

      #controls {
        display: inline-block;
        float: right;
        vertical-align: top;
        margin-top: 30px;
        margin-right: 20px;
        width:200px;
      }

      #output {
        width: 100%;
        height: 80px;
        margin: 0 auto;
        margin-top: 10px;
        border-left: 0px;
        border-right: 0px;
        padding-left: 0px;
        padding-right: 0px;
        display: block;
        background-color: black;
        color: white;
        font-family: 'Lucida Console', Monaco, monospace;
        outline: none;
      }
      #engine-box{
      	top:50%;
      	left:50%;
      	transform: translate(-50%, -50%);
      	position: fixed;
      	z-index:20;
      	width:80%;
      	height:80%;
      	background:rgba(240,255,255,1);
      }
    </style>
  </head>
  <body>
    <a href="http://emscripten.org">
     
    </a>

    <div class="spinner" id='spinner'></div>
    <div class="emscripten" id="status">Downloading...</div>

<span id='controls'>
  
  <span>
     当前位置：<span id="note-begin">0</span>,<span id="note-tone">0</span><br>
     <span id="note-using"></span><br>
     <span><a href="javascript:(function(){document.getElementById('midi_file').click();})()">打开</a><input type="file" id="midi_file" name="midi_file" style="display:none"></span><br>
     <span><a href="javascript:expMidi()">导出midi</a></span><br>
     <span><a href="javascript:saveFile()">保存</a></span><br>
     <span><a href="javascript:openEngine('')">打开引擎</a></span><br>
     <span id="soundfont-status">加载音源：<span id="soundfont-status-num">0</span>%</span><br>
  </span>
</span>

    <div class="emscripten">
      <progress value="0" max="100" id="progress" hidden=1></progress>
    </div>

    
    <div class="emscripten_border">
      <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()" tabindex=-1></canvas>
    </div>
    <textarea id="output" rows="8"></textarea>

    <script type='text/javascript'>
      var statusElement = document.getElementById('status');
      var progressElement = document.getElementById('progress');
      var spinnerElement = document.getElementById('spinner');
      
      window.mgnr_ready=[];
      window.mgnr_ready.push(function () {
      	if(location.hash){
      		if(location.hash[0]=='#'){
      			var arr = location.hash.split("#");
      			if(arr.length>=2){
      				var url = arr[1];
      				console.log("load:"+url);
      				loadMidiFile(url);
      			}
      		}
      	}
      });
      
      document.getElementById("midi_file").onchange=function() {
      	var file = document.getElementById("midi_file").files[0];//读取文件 
        	var url=URL.createObjectURL(file);
        	loadMidiFile(url);
      }
      
      function saveFile() {
      	toStringData(function(s){
      	    var blob = new Blob([s], {type: "application/octet-binary"});;
      	    var url = window.URL.createObjectURL(blob); 
      	    console.log(url);
      	    var link = document.createElement('a'); 
      	    link.style.display = 'none'; 
      	    link.href = url; 
      	    link.setAttribute('download', "export.mgnr"); 
      	    document.body.appendChild(link); 
      	    link.click();
      	});
      }
      
      function expMidi() {
      	var blob = exportMidiFile();
      	var url = window.URL.createObjectURL(blob); 
      	console.log(url);
      	var link = document.createElement('a'); 
      	link.style.display = 'none'; 
      	link.href = url; 
      	link.setAttribute('download', "export.mid"); 
      	document.body.appendChild(link); 
      	link.click();
      }

      var Module = {
        preRun: [],
        postRun: [],
        print: (function() {
          var element = document.getElementById('output');
          if (element) element.value = ''; // clear browser cache
          return function(text) {
            if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
            // These replacements are necessary if you render to raw HTML
            //text = text.replace(/&/g, "&amp;");
            //text = text.replace(/</g, "&lt;");
            //text = text.replace(/>/g, "&gt;");
            //text = text.replace('\n', '<br>', 'g');
            console.log(text);
            if (element) {
              element.value += text + "\n";
              element.scrollTop = element.scrollHeight; // focus on bottom
            }
          };
        })(),
        printErr: function(text) {
          if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
          console.error(text);
        },
        canvas: (function() {
          var canvas = document.getElementById('canvas');

          // As a default initial behavior, pop up an alert when webgl context is lost. To make your
          // application robust, you may want to override this behavior before shipping!
          // See http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15.2
          canvas.addEventListener("webglcontextlost", function(e) { alert('WebGL context lost. You will need to reload the page.'); e.preventDefault(); }, false);

          return canvas;
        })(),
        setStatus: function(text) {
          if (!Module.setStatus.last) Module.setStatus.last = { time: Date.now(), text: '' };
          if (text === Module.setStatus.last.text) return;
          var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
          var now = Date.now();
          if (m && now - Module.setStatus.last.time < 30) return; // if this is a progress update, skip it if too soon
          Module.setStatus.last.time = now;
          Module.setStatus.last.text = text;
          if (m) {
            text = m[1];
            progressElement.value = parseInt(m[2])*100;
            progressElement.max = parseInt(m[4])*100;
            progressElement.hidden = false;
            spinnerElement.hidden = false;
          } else {
            progressElement.value = null;
            progressElement.max = null;
            progressElement.hidden = true;
            if (!text) spinnerElement.style.display = 'none';
          }
          statusElement.innerHTML = text;
        },
        totalDependencies: 0,
        monitorRunDependencies: function(left) {
          this.totalDependencies = Math.max(this.totalDependencies, left);
          Module.setStatus(left ? 'Preparing... (' + (this.totalDependencies-left) + '/' + this.totalDependencies + ')' : 'All downloads complete.');
        }
      };
      Module.setStatus('Downloading...');
      window.onerror = function(event) {
        // TODO: do not warn on ok events like simulating an infinite loop or exitStatus
        Module.setStatus('Exception thrown, see JavaScript console');
        spinnerElement.style.display = 'none';
        Module.setStatus = function(text) {
          if (text) Module.printErr('[post-exception status] ' + text);
        };
      };
      function openEngine(val) {
      	document.getElementById("engine-box").style.display=val; 
      }
    </script>
    <div id="engine-box" style="display: none;">
    	<a href="javascript:synthOutput()" style="color:#9bf;">合成</a>
    	<span style="float: right;margin-right:20px;" onclick="openEngine('none')">X</span>
      <iframe src="engine" id="synth-engine" width="99%" height="90%"></iframe>
    </div>
    <script src="Base64.js" type="text/javascript"></script>
    <script src="Base64binary.js" type="text/javascript"></script>
    <script src="WebAudioAPI.js" type="text/javascript"></script>
    <script src="MIDI.min.js" type="text/javascript"></script>
    <script src="player.js" type="text/javascript"></script>
    <script async type="text/javascript" src="index.js"></script>
    使用方法：用鼠标轮子和键盘方向键移动界面，按q w 键缩放
  </body>
</html>


